Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-26T16:27:49.940Z Has data issue: false hasContentIssue false
  • English
  • Français

The Large-scale Distribution of Radio Sources

Published online by Cambridge University Press:  25 April 2016

Michael J. Drinkwater  and
Robert W. Schmidt
Michael J. Drinkwater
Affiliation:
Anglo-Australian Observatory, Coonabarabran, NSW 2357, [email protected]
Robert W. Schmidt
Affiliation:
School of Physics, University of Melbourne, Parkville, Vic. 3052, Australia
Get access Rights & Permissions [Opens in a new window]

Abstract

We have used a sample of 263 Parkes half-Jansky flat-spectrum radio sources to measure the spatial correlation function of radio galaxies and radio-loud quasars on scales up to 1000 h−1 Mpc. We do not detect any clustering in the sample. If any undetected clustering is described by a power-law spatial correlation function [ξ(r) = (r/r0)−1·8], we can rule out clustering with scales r0 ≥ 50 h−1 Mpc at the 99·9% confidence level. We have also used the sample to test for the ‘possible’ large concentration of quasars in the direction of the microwave background dipole found by Shaver (1987). There is no evidence for such a concentration in our data and we show that the earlier result was probably biased by the use of non-uniform image classifications.

Keywords

galaxies: radiogalaxies: clusteringquasars: general
Type
Extragalactic
Information
Publications of the Astronomical Society of Australia , Volume 13 , Issue 2 , May 1996 , pp. 127 - 131
Copyright
Copyright © Astronomical Society of Australia 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bolton, J. G., Savage, A., & Wright, A. E. 1979, Aust. J. Phys. Ap. Suppl., 46, 1 Google Scholar
Boyle, B. J., & Couch, W. J. 1993, MNRAS, 264, 604 & 726Google Scholar
Drinkwater, M. J. et al. 1996, MNRAS, in pressGoogle Scholar
Ellingson, E., Yee, H. K. C, & Green, R. F. 1991, ApJ, 371, 49 Google Scholar
Georgantopoulos, I., & Shanks, T. 1994, MNRAS, 271, 773 Google Scholar
Hill, G. J., & Lilly, S. J. 1991, ApJ, 367, 1 Google Scholar
Loveday, J., Efstathiou, G., Peterson, B. A., & Maddox, S. J. 1992, ApJ, 400, L43 Google Scholar
Osmer, P. S. 1981, ApJ, 247, 762 Google Scholar
Peacock, J. A., & Nicholson, D. 1991, MNRAS, 253, 307 Google Scholar
Savage, A., et al. 1990, Aust. J. Phys., 43, 241 Google Scholar
Shanks, T., & Boyle, B. J. 1994, MNRAS, 271, 753 Google Scholar
Shaver, P. A. 1987, Nature, 326, 773 Google Scholar
Sutherland, W. 1988, MNRAS, 234, 159 Google Scholar
Wright, A. E., & Otrupcek, R. E., eds 1990, Australia Telescope National Facility, PKSCAT90—the Southern Radio Database (Sydney: ATNF)Google Scholar